Tannhäuser (full title Tannhäuser und der
Sängerkrieg auf Wartburg / Tannhäuser and the
Singers' Contest at Wartburg) is an opera in three
acts, music and text by Richard Wagner, based on the
two Germanic legends of Tannhäuser and the song
contest at Wartburg. The story centres on the struggle
between sacred and profane love, and redemption through
love (a theme running through almost all Wagner's
mature work). (Source : Wikipedia)